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However, many interface designers have recently taken steps to make modal windows more obvious by darkening the background behind the window or allowing any mouse click outside of the modal window to force the modal window to close – a design called a Lightbox [5] – thus alleviating those problems. Jakob Nielsen states as an advantage of ...
Examples of horizontal and vertical scrollbars around a text box Examples of vertical scrollbar at right end of Wikipedia home page. A scrollbar is an interaction technique or widget in which continuous text, pictures, or any other content can be scrolled in a predetermined direction (up, down, left, or right) on a computer display, window, or viewport so that all of the content can be viewed ...
A modal verb is a type of verb that contextually indicates a modality such as a likelihood, ability, permission, request, capacity, suggestion, order, obligation, necessity, possibility or advice. Modal verbs generally accompany the base (infinitive) form of another verb having semantic content. [ 1 ]
The English modal auxiliary verbs are a subset of the English auxiliary verbs used mostly to express modality, properties such as possibility and obligation. [a] They can most easily be distinguished from other verbs by their defectiveness (they do not have participles or plain forms [b]) and by their lack of the ending ‑(e)s for the third-person singular.
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a) Bachelors are necessarily unmarried. b) John is a bachelor. Therefore, c) John cannot marry. The condition a) appears to be a tautology and therefore true. The condition b) is a statement of fact about John which makes him subject to a); that is, b) declares John a bachelor, and a) states that all bachelors are unmarried.